The MERINO ULTRA is a trail sock for men from the On Runningbrand.

Designed with a high-tech ergonomic design , this model offers the perfect balance of comfort, protection and performance to accompany runners on all types of terrain. Thanks to its composition inmerino wool, it ensures optimal thermoregulation and excellent moisture management. Its technical design incorporates mesh channels to improve ventilation, targeted terry cushioning for added comfort and anti-slip technology underfoot for maximum stability. The arch and heel support ensures a precise fit, while the reflective threadss at the ankles provide enhanced visibility.

Ideal for trail running and long outings, this sock combines durability and innovation for an unrivalled running experience.